EP3868432A1 - Cathéter endovasculaire avec ballonnet interne - Google Patents

Cathéter endovasculaire avec ballonnet interne Download PDF

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Publication number
EP3868432A1
EP3868432A1 EP21153461.5A EP21153461A EP3868432A1 EP 3868432 A1 EP3868432 A1 EP 3868432A1 EP 21153461 A EP21153461 A EP 21153461A EP 3868432 A1 EP3868432 A1 EP 3868432A1
Authority
EP
European Patent Office
Prior art keywords
catheter
catheter body
exit port
endovascular
side exit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21153461.5A
Other languages
German (de)
English (en)
Inventor
Claudio Silvestro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medtronic Vascular Inc
Original Assignee
Medtronic Vascular Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medtronic Vascular Inc filed Critical Medtronic Vascular Inc
Publication of EP3868432A1 publication Critical patent/EP3868432A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0125—Catheters carried by the bloodstream, e.g. with parachutes; Balloon catheters specially designed for this purpose
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices
    • A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M2025/018—Catheters having a lateral opening for guiding elongated means lateral to the catheter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes
    • A61M2025/0681—Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/09—Guide wires
    • A61M2025/09008—Guide wires having a balloon

Definitions

  • the present disclosure relates to endovascular catheters for percutaneous endovascular procedures, and more specifically to such endovascular catheters with an internal inflatable balloon to help guide catheter components and surgical tools within blood vessels of a patient.
  • percutaneous endovascular procedures has been established as a minimally invasive technique to deliver a variety of clinical treatments in a patient's vasculature.
  • endovascularly-delivered devices extends to new and more complex treatments, the anatomical configurations of the target vasculature can become more complex. Delivery of treatment to highly tortuous anatomical districts can be challenging.
  • an endovascular catheter in one embodiment, includes an elongated and hollow catheter body extending along a longitudinal axis between a proximal end and a distal end, the distal end defining a main exit port of the catheter body, and the catheter body defining a side exit port located between the proximal end and the distal end, the catheter body configured to receive an elongated element to pass therethrough along the longitudinal axis.
  • the endovascular catheter also includes an inflatable element disposed within the catheter body, wherein the inflatable element is configured to inflate at a location adjacent to the side exit port to direct the elongated element through the side exit port.
  • an endovascular catheter in another embodiment, includes an elongated and hollow catheter body configured to guide a surgical tool into a desired vasculature, the catheter body extending along a longitudinal axis between a proximal end and a distal end, the distal end defining a main exit port of the catheter body, and the catheter body defining a side exit port located between the proximal end and the distal end.
  • the endovascular catheter also includes an internal balloon disposed within the catheter body. The endovascular catheter is configured to operate in a first mode in which the internal balloon is deflated and the surgical tool is directed to exit the catheter body at the main exit port, and a second mode in which the internal balloon is inflated to direct the surgical tool to exit the catheter body at the side exit port.
  • a method of selectively directing a surgical tool within a catheter includes inserting a catheter body into a vessel of a patient, the catheter body having a proximal end and a distal end, the distal end defining a main exit port of the catheter body, and the catheter body defining a side exit port located between the proximal end and the distal end of the catheter body, the side exit port having a proximal edge and a distal edge.
  • the method further includes inflating an internal balloon at a location between the proximal edge of the side exit port and the distal end of the catheter body.
  • the method further includes, after the step of inflating, advancing the surgical tool through the catheter body such that the inflated internal balloon directs the surgical tool to exit the catheter body through the side exit port.
  • distal and proximal are used in the following description with respect to a position or direction relative to a treating clinician.
  • distal and distal can refer to positions distant from or in a direction away from the clinician, while “proximal” and “proximally” can refer to positions near or in a direction toward the clinician.
  • proximal is the portion nearer the heart by way of blood flow path while “distal” is the portion of the stent-graft further from the heart by way of blood flow path.
  • percutaneous endovascular procedures has been established as a minimally invasive technique to deliver a variety of clinical treatments in a patient's vasculature.
  • endovascularly-delivered devices As the application of endovascularly-delivered devices extends to new and more complex treatments, the anatomical configurations of the target vasculature can become more complex. Treatment of highly tortuous and challenging anatomical districts becomes increasingly frequent.
  • Percutaneous endovascular devices such as catheters are typically tracked inside the patient's anatomy over a guide wire, which is a low-profile flexible wire used to guide the catheter into the blood vessels. Being able to properly place the guide wire into the desired anatomical district of the patient's vasculature is important to percutaneous endovascular procedures. Placement of the guide wire must therefore be performed in a time-efficient, reliable way to facilitate the procedure and guarantee access to the target anatomy.
  • This disclosure is generally directed to an endovascular catheter configured for use with percutaneous endovascular procedures.
  • the catheter is designed so to be used for engagement and treatment of highly tortuous, anatomically complex districts of the patient's vasculature.
  • the catheter is configured to allow treatment of several vascular areas via one single device.
  • the catheter includes an outer catheter body having multiple exit ports aligned with corresponding regions of the patient's vasculature (e.g., corresponding arteries).
  • a guide wire can be inserted into a first portion of the patient's vasculature, and the catheter body can slide along the guide wire into place.
  • An inflatable element such as a balloon
  • a medical device or the guide wire, retracted
  • the obstruction created by the inflated balloon directs the medical device into a desired exit port. This enables treatment of tight-angle bifurcations and challenging anatomies within the patient's vasculature.
  • FIGS 1A-1C illustrate an endovascular catheter 10 according to one embodiment.
  • the catheter 10 includes an outer catheter body 12 (also referred to as a catheter guide wire lumen) that is generally elongated, hollow, and tubular (e.g., cylindrical) for use with percutaneous endovascular procedures, and for enabling various components and tools to be inserted therethrough.
  • the catheter body 12 is shown here extending along a longitudinal axis 14 in a straight line, but is flexible such that the catheter body may bend and flex while being inserted into the patient's body.
  • the catheter body 12 is made of a braided or woven metallic or synthetic material to enable such flexibility.
  • a guide wire 16 is also provided.
  • the guide wire 16 may be inserted into the patient's vasculature until it reaches a desired location, and then the catheter body 12 is subsequently slid and guided along the guide wire 16 to the desired location.
  • the catheter body 12 extends along the longitudinal axis 14 between a proximal end 18 (e.g., closer to the operator) and a distal end 20 (e.g., the leading end of the catheter body 12 inserted into the patient's vasculature).
  • the distal end 20 includes or defines a main exit port 22.
  • the main exit port 22 is an aperture, opening, or the like that allows surgical tools that are internal to the catheter body 12 (e.g., the guide wire 16) to pass therethrough.
  • the diameter of the main exit port 22 may be larger than the diameter of each of the surgical tools within the catheter body 12.
  • the main exit port 22 is coaxially-oriented to the longitudinal axis 14. In other words, a central axis extending through the main exit port 22 may be coaxial or parallel to the longitudinal axis 14.
  • the catheter body 12 also includes a side exit port 24.
  • the side exit port 24 is near or adjacent the distal end 20.
  • the distance between the side exit port 24 and the distal end 20 may be less than 25% of the distance between the proximal end 18 and the distal end 20, and in more particular embodiments, the distance between the side exit port 24 and the distal end 20 may be about 10% of the distance between the proximal end 18 and the distal end 20.
  • the side exit port 24 may be aligned with a corresponding arterial branch (or other such branch in the vasculature), as illustrated in Figure 1B , for example.
  • FIG. 1A This allows a surgical tool within the catheter body 12 to exit the side exit port 24 and into the arterial branch.
  • a plurality of side exit ports 24 may be included, allowing any number of side exit ports 24 to be aligned with a corresponding number of arterial branches.
  • a plurality of side exit ports 24 may also be included to provide various options for placement of the catheter body 12, allowing the operator to choose one of a plurality of side exit ports 24 to align with the desired arterial branch.
  • the plurality of side exit ports may include two or more side exit ports that are axially in the same location but spaced circumferentially (equally or unequally). Alternatively, the plurality of side exit ports may be spaced axially and may be circumferentially aligned or unaligned. In other embodiments, any combination of the above multiple exit ports may be utilized.
  • the catheter 10 also includes an inflatable member such as an internal balloon 26.
  • the internal balloon 26 is configured to selectively inflate and deflate within the catheter body 12.
  • the internal balloon 26 is carried on and coupled to an internal balloon inflation lumen 28.
  • the internal balloon inflation lumen 28 is hollow, and extends through the proximal end 18 of the catheter body 12.
  • the operator may pump or otherwise force fluid (e.g., saline solution liquid) through the internal balloon inflation lumen 28 and into the internal balloon 26, thereby inflating the internal balloon 26.
  • the operator may release or draw the fluid from the internal balloon 26 via the internal balloon inflation lumen 28 to deflate the internal balloon 26.
  • Figure 1A shows the internal balloon 26 in a deflated state.
  • the internal balloon 26 maintains a low profile inside the catheter body 12, thus allowing relative movement between the guide wire 16 and the catheter body 12.
  • the guide wire 16 can pass entirely through the distal end 20 of the catheter body 12, passing beyond the internal balloon 26 without obstruction.
  • the internal balloon 26 can be positioned within the catheter body 12 at a location that aligns with at least a portion of the side exit port. In one embodiment, a portion of the internal balloon 26 overlaps with a portion of the side exit port 24 along the axis 14. This is shown in Figures 1A-1C .
  • the internal balloon 26 can be fixed or otherwise coupled to the catheter body 12 such that the internal balloon 26 moves along with the catheter body 12 as it is inserted. This can assure that the internal balloon 26 remains at the proper position relative to the side exit port 24 for when it is desired to be inflated. And, the internal balloon 26 can be fixed at a location radially opposite from the side exit port 24 such that it inflates in a direction toward the side exit port. Alternatively, the internal balloon 26 may be moveable within the catheter body 12, allowing the operator to feed and advance the internal balloon 26 and the internal balloon inflation lumen 28 within the catheter body 12 once the catheter body 12 is properly located.
  • Figure 1B shows the internal balloon 26 in an inflated state.
  • the guide wire 16 Prior to inflation, the guide wire 16 can be retracted toward the proximal end 18 of the catheter body 12. This yields space for the internal balloon 26 to be inflated.
  • the internal balloon 26 is dimensioned such that, when inflated, it obstructs the guide wire 16, thus preventing the guide wire 16 from passing beyond the internal balloon 26 and towards the distal end 20 of the catheter body 12.
  • the internal balloon 26 need not be inflated such that it filled the entire interior diameter of the catheter body 12.
  • the inner diameter of the catheter body 12 is between 0.8 millimeters (mm) and 1.4 mm, such as 1.1 mm
  • the outer diameter of the internal balloon 26 when inflated is between 0.8 mm and 1.2 mm, such as 1.0 mm
  • the outer diameter of the guide wire 16 is between 0.3 mm and 0.7 mm, such as 0.5 mm.
  • Figure 1C shows the internal balloon 26 remaining in the inflated state.
  • the guide wire 16 is now advanced by the operator.
  • the guide wire 16 is obstructed by the internal balloon 26, and thus is forced to exit the side exit port 24 and into the arterial branch.
  • the distal end of the guide wire 16 contacts the internal balloon 26, and further advancement of the guide wire 16 forces the guide wire 16 to bend against the internal balloon 26 toward the direction of the side exit port 24.
  • the internal balloon 26 may be provided with a curved, angled or tapered edge 30 that is angled toward the side exit port 24 to assist in guiding the guide wire 16 to the side exit port 24.
  • FIG. 1A-1C While only one internal balloon 26 is shown in Figures 1A-1C , it should be understood that multiple internal balloons 26 can be utilized in an embodiment in which multiple corresponding side exit ports 24 are provided on the catheter body.
  • the catheter may be provided with multiple internal balloons 26 to help direct the surgical tool(s) into the multiple branches.
  • the guide wire 16 after inflation of the internal balloon 26, the guide wire 16 is directed through side exit port 24, whereupon other surgical devices can be guided. After direction of those surgical devices through the side exit port 24, the guide wire 16 can once again be retracted, and another internal balloon closer to the proximal end 18 can be inflated.
  • the guide wire can be directed into yet another side exit port aligned with that internal balloon, in which more surgical devices can be guided through via the guide wire 16.
  • multiple guide wires are utilized rather than retracting the same guide wire 16 back through each side exit port.
  • the internal balloon 26 may comprise an outer shell or structure that is impervious to surgical tools such as needles or guide wires. This can assure that the contact made by the surgical tool and the inflated internal balloon 26 does not puncture the internal balloon 26.
  • the internal balloon can comprise, for example, a braided metallic or synthetic structure with gaps in the braids that are smaller than the diameter of the surgical tool. The braided nature of the material also provides flexibility, enabling the internal balloon 26 to inflate and deflate
  • At least a portion of the internal balloon 26 can be adhered (e.g., glued) to the inner wall of the catheter body 12, at a location radially opposite of the side exit port 24. In one embodiment, roughly one third to one half of the outer circumference of the internal balloon is adhered to the inner wall of the catheter body 12. As the internal balloon 26 is inflated, the adhered portion of the internal balloon remains in contact with the inner wall of the catheter body, and the non-adhered portion of the internal balloon expands radially outward toward the side exit port 24. This assures that as the guide wire 16 is extended, it is forced between the internal balloon 26 and the side exit port 24, eventually causing the guide wire 16 to exit the side exit port 24 while reducing the chance for a misdirection.
  • the internal balloon inflation lumen 28 can also be adhered (e.g., glued) to the inner wall of the catheter body 12. This prevents the internal balloon inflation lumen 28 from getting tangled with another lumen or guide wire within the catheter 10.
  • a first device e.g., guide wire 16
  • the internal balloon 26 can be inflated to obstruct the passageway within the catheter body 12.
  • the inflated internal balloon 26 can direct the second device into the side exit port 24 and into the branched vessel. This allows access to the main vessel through the main exit port 22 and simultaneous treatment in the branched, secondary vessel via the side exit port 24.
  • a second device e.g., another guide wire, stent, lumen, balloon, etc.
  • Figure 2 shows the catheter 10 within positioned within a portion of the vasculature 32 of a patient.
  • the catheter body 12 extends along a main vessel (e.g., artery) 34.
  • the side exit port 24 is aligned with an opening into a branched or secondary vessel (e.g., artery) 36.
  • the guide wire 16 When the internal balloon 26 is in its deflated state, the guide wire 16 is able to bypass the secondary vessel and extend through the distal end 20 of the catheter body 12 and into the main vessel 34.
  • the guide wire 16 When the guide wire is partially retracted within the catheter body 12 and the internal balloon 26 is then inflated, the guide wire 16 will only be allowed to exit the side exit port 24. This allows access for other surgical devices (e.g., stents, etc.) to be guided along the guide wire 16 and into the branched vessel 36.
  • other surgical devices e.g., stents, etc.
  • Figure 2 illustrates the surgical tool as a guide wire
  • the surgical tool being guided through the vasculature by the internal balloon is not limited to a guide wire.
  • the surgical tool is a needle, a lumen, a catheter, or other tools typically inserted via catheters.
  • the surgical tool is a liquid, such as contrast medium.
  • the liquid contrast medium can be a liquid dye or contrast configured to improve viewable pictures of the inside of the patient's body produced by x-rays, computed tomography (CT), magnetic resonance (MR) imaging, ultrasound, and the like.
  • CT computed tomography
  • MR magnetic resonance
  • the catheter body 12 may once again house the internal balloon (not shown) therein.
  • the internal balloon may selectively inflate or deflate to direct the liquid contrast medium into either the main vessel 34 or the secondary vessel 36.
  • the liquid contrast medium may be directed into the main vessel 34, as represented by arrows 40.
  • the internal balloon is inflated, at least a portion of the liquid contrast medium may be directed into the secondary vessel 36, as represented by the arrows 42.
  • the internal balloon may be sized such that, when inflated, the internal balloon contacts and seals off the entire inner wall of the catheter body 12. This prevents substantially all of the liquid contrast medium from traveling into the main vessel 34 and instead directs substantially all of the liquid contrast medium to travel into the secondary vessel 36.
  • the outer diameter of the internal balloon when inflated outside of the catheter body 12 is greater than the inner diameter of the catheter body 12, but is held to an outer diameter that is equivalent to the inner diameter of the catheter body 12 when inside the catheter body.
  • the surgical tool is a stent, such as a balloon stent.
  • a catheter 50 includes a catheter body 12 and an inflatable internal balloon 26, similar to previous embodiments.
  • the catheter 50 is used for delivery of a balloon stent 52 within the vasculature of the patient.
  • a stent 54 along with an inflatable balloon 56 are delivered with or through the catheter body 12, and extended axially out therefrom to a desired location.
  • the stent 54 may be a small mesh tube made of medical-grade metal (e.g., stainless steel, cobalt alloy).
  • the stent 54 can be initially delivered in a contracted or constricted position, and then expanded via the inflatable balloon 56, which can inflate with a slightly-pressurized liquid such as a saline solution.
  • a slightly-pressurized liquid such as a saline solution.
  • the balloon 56 is inflated to radially expand the stent 54, the balloon 56 pushes back plaque or buildup 58 on the walls of the artery.
  • the balloon 56 is then deflated and removed, and the stent 54 is left attached to the patient's artery to help keep the blood vessel open.
  • Figure 4 shows the balloon stent 52 located in a main artery 60 via a dedicated guide wire or lumen 62.
  • the balloon 56 is shown in a semi-inflated position, beginning to make contact with and push back the buildup 58 in the main artery 60.
  • the internal balloon 26 is deflated to allow the balloon stent 52 to travel out of the main exit port 22 of the catheter body 12 and into the main artery 60.
  • Figure 5 shows the balloon stent 52 located in a secondary artery 64.
  • the internal balloon 26 was inflated prior to the balloon stent 52 being extended out of the catheter body 12. With the internal balloon 26 inflated, a forced extension of the lumen 62 forces the balloon stent 52 to exit the side exit port 24 of the catheter body 12, and travel into the secondary artery 64.
  • the balloon 56 is inflated (shown partially inflated in Figure 5 ) to push against the buildup 58 in the secondary artery 64.
  • the balloon 56 can be deflated and retracted through the side exit port 24, leaving behind the stent 54 attached to the secondary artery 64.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biophysics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
EP21153461.5A 2020-01-30 2021-01-26 Cathéter endovasculaire avec ballonnet interne Pending EP3868432A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16/776,658 US11617857B2 (en) 2020-01-30 2020-01-30 Endovascular catheter with internal balloon

Publications (1)

Publication Number Publication Date
EP3868432A1 true EP3868432A1 (fr) 2021-08-25

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EP21153461.5A Pending EP3868432A1 (fr) 2020-01-30 2021-01-26 Cathéter endovasculaire avec ballonnet interne

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EP (1) EP3868432A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024020142A1 (fr) * 2022-07-21 2024-01-25 Silk Road Medical, Inc. Gaines d'occlusion conçues pour un accès vasculaire percutané

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US6022342A (en) * 1998-06-02 2000-02-08 Mukherjee; Dipankar Catheter introducer for antegrade and retrograde medical procedures
US20080154172A1 (en) * 2006-12-20 2008-06-26 Medtronic Vascular, Inc. Low Profile Catheters and Methods for Treatment of Chronic Total Occlusions and Other Disorders
US20150165163A1 (en) * 2011-06-30 2015-06-18 The Spectranetics Corporation Reentry catheter and method thereof
WO2019066728A1 (fr) * 2017-09-30 2019-04-04 Tay Hsien Tsung Obturateur, gaine et procédé d'utilisation associé

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Publication number Priority date Publication date Assignee Title
US6022342A (en) * 1998-06-02 2000-02-08 Mukherjee; Dipankar Catheter introducer for antegrade and retrograde medical procedures
US20080154172A1 (en) * 2006-12-20 2008-06-26 Medtronic Vascular, Inc. Low Profile Catheters and Methods for Treatment of Chronic Total Occlusions and Other Disorders
US20150165163A1 (en) * 2011-06-30 2015-06-18 The Spectranetics Corporation Reentry catheter and method thereof
WO2019066728A1 (fr) * 2017-09-30 2019-04-04 Tay Hsien Tsung Obturateur, gaine et procédé d'utilisation associé

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US11617857B2 (en) 2023-04-04

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